I found this code in Graphics.Rendering.OpenGL.GL.VertexArrays in the OpenGL package, version 2.2.3.0:

vertexAttribPointer :: AttribLocation -> StateVar (IntegerHandling, VertexArrayDescriptor a)


vertexAttribPointer location = undefined
   makeStateVar (getVertexAttribPointer_ location) (setVertexAttribPointer location)



Is that "undefined" intentional?  When I remove "undefined", it works fine.

  - Conal